LED Globe

thingiverse

Create a small 5 cm hollow sphere with a base and hole for a 5mm LED. Use it with an RGB LED and Arduino to make a Pomodoro timer that starts green, fades to red over 24 minutes, glows blue for four minutes signaling a stretch break. Print the sphere in a neutral or white color, insert your preferred LED, and power it as desired. For creating an RGB LED circuit for Arduino, follow this instructable: http://www.instructables.com/id/Fading-RGB-LED-Arduino/. The code specific to the Pomodoro timer logic can be found in the provided code snippet.